ILOG CPLEX 11.0 User's Manual

Concert Technology Message ChannelsIn the C++ API of Concert Technology, the class IloEnv initializes output streams forgeneral information, for error messages, and for warnings. The class IloAlgorithmsupports these communication streams, and the class IloCplex inherits its methods. Forgeneral output, there is the method IloAlgorithm::out. For warnings and nonfatalconditions, there is the method IloAlgorithm::warning. For errors, there is the methodIloAlgorithm::error.By default, an instance of IloEnv defines the output stream referenced by the method outas the system cout in the C++ API, but you can use the method setOut to redefine it as youprefer. For example, to suppress output to the screen in a C++ application, use this methodwith this argument:setOut(IloEnv::getNullStream)Likewise, you can use the methods IloAlgorithm::setWarning and setError toredefine those channels as you prefer.154 ILOG CPLEX 11.0 — USER’ S MANUAL